X-Git-Url: http://git.mutantstargoat.com?a=blobdiff_plain;f=src%2Fmeshgen.cc;h=bd9fe534e5fe5e2840dcdfd0019173404be8997b;hb=9922a7c30b64d74b424cb5783b08497396d2365c;hp=c6a4f48784082604b68054249c8e1c9f24ccca95;hpb=47982b199010496e34eefb95044275fb231cba18;p=demo

diff --git a/src/meshgen.cc b/src/meshgen.cc
index c6a4f48..bd9fe53 100644
--- a/src/meshgen.cc
+++ b/src/meshgen.cc
@@ -125,7 +125,7 @@ void gen_geosphere(Mesh *mesh, float rad, int subdiv, bool hemi)
 // ------ heightfield ------
 
 static Vec3 hfield_vertex(float u, float v, float h, float xsz,
-		float ysz, float height)
+                          float ysz, float height)
 {
 	float x = u * xsz - xsz / 2.0;
 	float y = h * height;
@@ -135,11 +135,11 @@ static Vec3 hfield_vertex(float u, float v, float h, float xsz,
 }
 
 void gen_heightfield(Mesh *mesh, float xsz, float ysz, float height, int usub,
-		int vsub, float (*calc_height)(float u, float v, void *ptr), void *ptr)
+                     int vsub, float (*calc_height)(float u, float v, void *ptr), void *ptr)
 {
-	/* 
+	/*
 	usub and vsub is the number of subdivision at each axis
-	(heightfield = grid) 
+	(heightfield = grid)
 	*/
 	if(usub < 1)
 		usub = 1;
@@ -174,12 +174,12 @@ void gen_heightfield(Mesh *mesh, float xsz, float ysz, float height, int usub,
 			slopes in x, z, axis */
 
 			Vec3 tangent = hfield_vertex(u + du, v, calc_height(u + du, v, ptr),
-					xsz, ysz, height) - vtx;
+			                             xsz, ysz, height) - vtx;
 
 			Vec3 bitangent = hfield_vertex(u, v + dv, calc_height(u, v + dv, ptr),
-					xsz, ysz, height) - vtx;
+			                               xsz, ysz, height) - vtx;
 
-			Vec3 normal = normalize(cross(tangent, bitangent));
+			Vec3 normal = normalize(cross(bitangent, tangent));
 
 			mesh->vertices[vidx] = vtx;
 			mesh->normals[vidx] = normal;
@@ -190,7 +190,7 @@ void gen_heightfield(Mesh *mesh, float xsz, float ysz, float height, int usub,
 	}
 
 	/*
-		indices: 
+		indices:
 	*/
 	uint16_t *iptr = &mesh->indices[0];